Terminal Authentication Method and Device

Abstract

An authentication method includes sensing, pressure information through a touch screen. The pressure information includes a pressing strength value of a pressed contact when a user presses the touch screen. The sensed pressure information is compared with an authentication password by using the sensed pressure information as an authentication password. If the sensed pressure information matches the stored authentication password, it is determined that password authentication succeeds; otherwise, the password authentication fails.

What is claimed is: 
     
         1 . A terminal authentication method, comprising:
 sensing pressure information through a touch screen of a terminal, wherein the pressure information comprises a pressing strength value of a pressed contact when a user presses the touch screen;   comparing the sensed pressure information with an authentication password stored in the terminal by using the sensed pressure information as an authentication password;   when the sensed pressure information matches the stored authentication password, determining, that password authentication succeeds; and   when the sensed pressure information does not match the determining, that password authentication fails.   
     
     
         2 . The authentication method according to  claim 1 , wherein
 the pressing strength value of the pressed contact comprises a pressure value and/or a pressure intensity value generated at the pressed contact; and   the stored authentication password comprises preset pressure information, wherein the preset pressure information comprises a pressure value and/or a pressure intensity value.   
     
     
         3 . The authentication method according to  claim 2 , wherein the pressure information further comprises any one or a combination of a position of a pressed contact, a duration of pressing a contact, a number of pressed contacts, and a sequence of pressing pressed contacts of the touch screen. 
     
     
         4 . The method according to  claim 3 , wherein sensing, the pressure information through the touch screen comprises:
 A. when detecting a pressed contact on a surface of the touch screen, generating an interrupt, identifying a position of an initial pressed contact and identifying a pressing strength value of the initial pressed contact;   B. when it is detected that the pressed contact on the surface of the touch screen is sustained and effective, disabling the interrupt of the terminal, determining a move event of the pressed contact in a polling mode, identifying a position of a moved pressed contact, and identifying a pressing strength value of the moved pressed contact;   C. when a timer set by the terminal detects, in the polling mode, that the pressed contact on the surface of the touch screen disappears, determining an EVT_TOUCH_UP, recording an identified position of the initial pressed contact, a pressing strength value of the initial pressed contact, the position of the moved pressed contact, and the pressing strength value of the moved pressed contact in a touch action; and   wherein steps A to C are performed once or multiple times, to obtain pressure information about one or more pressing actions.   
     
     
         5 . The method according to  claim 1 , wherein, after determining that the password authentication succeeds, the method further comprises executing an operation corresponding to an operation command subsequently input by the user. 
     
     
         6 . A terminal authentication device, comprising:
 a sensing unit;   an authentication unit; and   a storage unit;   wherein the sensing unit is configured to sense pressure information through a touch screen and to send the pressure information to the authentication unit, wherein the pressure information comprises a pressing strength value of a pressed contact when a user presses the touch screen;   wherein the storage unit is configured to store an authentication password; and   wherein the authentication unit is configured to receive the pressure information from the sensing unit and to compare the pressure information with the authentication password obtained from the storage unit by using the pressure information as an authentication password, wherein if the sensed pressure information matches the stored authentication password, the terminal determines that password authentication succeeds, and if the sensed pressure information does not match the stored authentication password, the terminal determines that password authentication fails.   
     
     
         7 . The device according to  claim 6 , wherein the storage unit comprises a sub-storage unit, configured to store preset pressure information as an authentication password, the preset pressure information comprises a pressure value and/or a pressure intensity value; and
 wherein the pressing strength value sensed by the sensing unit comprises a pressure value and/or a pressure intensity value generated at the pressed contact.   
     
     
         8 . The device according to  claim 7 , wherein the sensing unit further comprises:
 a detection unit,   an interrupt unit,   a polling unit, and   a recording unit;   wherein the detection unit is configured to instruct the interrupt unit to generate an interrupt when detecting a pressed contact on a surface of the touch screen, to identify a position of an initial pressed contact, and to identify a pressing strength value of the initial pressed contact; when detecting that the pressed contact on the surface of the touch screen is sustained and effective, to instruct to disable the interrupt of the interrupt unit, and to instruct the polling unit to perform an operation in polling mode; when detecting that the pressed contact on the surface of the touch screen disappears, determine an EVT_TOUCH_UP, and instruct the recording unit to record;   wherein the recording unit is configured to record an identified position of the initial pressed contact, a pressing strength value of the initial pressed contact, a position of a moved pressed contact, and a pressing strength value of the moved pressed contact in a touch action;   wherein the interrupt unit is configured to generate the interrupt under the instruction of the detection unit, wherein the interrupt is disabled under the instruction of the detection unit;   wherein the polling unit is configured to determine, in polling mode, a move event of the pressed contact within a set duration under the instruction of the detection unit, identify the position of the moved pressed contact, and identify the pressing strength value of the moved pressed contact; and   wherein the detection unit, the interrupt unit, the polling unit, and the recording unit execute the operations once or multiple times, to record pressure information of one or more touch actions.   
     
     
         9 . The device according to  claim 6 , further comprising an execution unit, configured to execute, according to an operation command subsequently input by a user, an operation corresponding to the operation command, when the authentication performed by the authentication unit succeeds. 
     
     
         10 . The device according to  claim 6 , wherein the device is a mobile phone;
 wherein the mobile phone further comprises a shell, a circuit board, a resistive touch screen, a processor, a radio frequency circuit, a microphone, a loudspeaker, and a power supply;   wherein the resistive touch screen is disposed on the shell, the circuit board is disposed in space encircled by the shell, and the processor and the radio frequency circuit are disposed on the circuit board;   wherein the processor is configured to process data input through the resistive touch screen, and/or output a result of the processed data through the resistive touch screen;   wherein the radio frequency circuit is configured to establish communication between the mobile phone and a wireless network, and implement data reception and transmission between the mobile phone and the wireless network;   wherein the microphone is configured to collect sound and convert the collected sound into sound data, so that the mobile phone transmits, through the radio frequency circuit, the sound data to the wireless network;   wherein the loudspeaker is configured to restore the sound data, received by the mobile phone from the wireless network through the radio frequency circuit, to sound and play the sound for the user; and   wherein the power supply is configured to supply power to each circuit or element of the mobile phone.   
     
     
         11 . An authentication method, comprising:
 sensing pressure information through a touch screen, wherein the pressure information comprises a pressing strength value of a pressed contact when a user presses the touch screen;   comparing the sensed pressure information with an authentication password to determine whether or not the sensed pressure information matches the authentication password;   when the sensed pressure information matches the authentication password, determining that password authentication succeeds; and   when the sensed pressure information does not match the authentication password, determining that the password authentication fails.   
     
     
         12 . The authentication method according to  claim 11 , wherein the pressing strength value of the pressed contact comprises a pressure value and/or a pressure intensity value generated at the pressed contact. 
     
     
         13 . The authentication method according to  claim 12 , wherein the pressure information further comprises any one or a combination of a position of a pressed contact, a duration of pressing a contact, a number of pressed contacts, and a sequence of pressing pressed contacts of the touch screen. 
     
     
         14 . The method according to  claim 11 , wherein sensing the pressure information through the touch screen comprises:
 when detecting a pressed contact on a surface of the touch screen, identifying a position of an initial pressed contact and identifying a pressing strength value of the initial pressed contact;   when it is detected that the pressed contact on the surface of the touch screen is sustained and effective, determining a move event of the pressed contact in polling mode, identifying a position of a moved pressed contact, and identifying a pressing strength value of the moved pressed contact; and   when it is detected that the pressed contact on the surface of the touch screen disappears, recording an identified position of the initial pressed contact, a pressing strength value of the initial pressed contact, the position of the moved pressed contact, and the pressing strength value of the moved pressed contact in a touch action.   
     
     
         15 . The method according to  claim 11 , wherein the touch screen comprises a touchscreen of a communications terminal. 
     
     
         16 . The method according to  claim 15 , wherein the authentication password is stored in the terminal and wherein the terminal performs the sensing, comparing and determining steps. 
     
     
         17 . The method according to  claim 15 , wherein sensing the pressure information through the touch screen of the terminal comprises:
 when detecting a pressed contact on a surface of the touch screen, generating an interrupt by the terminal, identifying a position of an initial pressed contact, and identifying a pressing strength value of the initial pressed contact;   when it is detected that the pressed contact on the surface of the touch screen is sustained and effective, disabling the interrupt of the terminal, determining, by a timer set by the terminal, a move event of the pressed contact in polling mode, identifying a position of a moved pressed contact, and identifying a pressing strength value of the moved pressed contact; and   when the timer set by the terminal detects, in a polling mode, that the pressed contact on the surface of the touch screen disappears, determining an EVT_TOUCH_UP, and recording an identified position of the initial pressed contact, a pressing strength value of the initial pressed contact, the position of the moved pressed contact, and the pressing strength value of the moved pressed contact in a touch action.   
     
     
         18 . The method according to  claim 11 , wherein, after the determining that the password authentication succeeds, the method further comprises executing an operation corresponding to an operation command subsequently input by the user.